Radiative decay of the Δ resonance: Analyzing powers forp→→γn
- 14 February 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 72 (7) , 973-976
- https://doi.org/10.1103/physrevlett.72.973
Abstract
The polarized target asymmetry for p→→γn has been measured by coincident detection of the γ and the neutron at several angles across the Δ resonace energy region. A high-resolution NaI γ spectrometer together with good time-of-flight information for the neutron resulted in excellent separation of this radiative capture reaction from the much higher cross-section charge exchange reaction p→→n. Statistical uncertainties are Δ=0.02-0.04, representing a significant improvement over previous results. The new data are discussed in the context of recent theoretical models.
Keywords
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